The fall election's outcome will affect some investments more than others

Now that John Kerry has fleshed out his economic plan, investors should start thinking about a presidential portfolio. Intent on rolling back tax cuts, pushing a tough environmental agenda and slashing the budget deficit, Kerry in office would quickly change the investment backdrop for a handful of industries. So, as he and George W. Bush gain and fall in the polls between now and November, expect certain stocks to fall in and out of favor.

For traders, any pre-election stock moves will present opportunities. But even long-term investors have something at stake. A Kerry win could favor bonds over stocks for...